public bool Send(byte[] bytes)
{
Thread.Sleep(SendInterval);
if (Status == DeviceStatus.Online && bytes?.Length > 0 && bytes.Length == SendBlockSize)
{
return(AtUsbHid.WriteData(bytes));
}
return(false);
}
public HidDeviceViewModel()
{
var atUsbHidFilepath = $"{Environment.CurrentDirectory}\\AtUsbHid.dll";
if (!File.Exists(atUsbHidFilepath))
{
File.WriteAllBytes(atUsbHidFilepath, Properties.Resources.AtUsbHid);
}
AtUsbHid.LoadUnmanagedDll(atUsbHidFilepath);
Task.Factory.StartNew(deviceStatusMonitor);
Task.Factory.StartNew(recieveDataMonitor);
}
public void UpdateStatus()
{
var isOnline = AtUsbHid.FindHidDevice(_vendorId, _productIds[SelectedProductId]);
var currentDeviceStatus = isOnline ? DeviceStatus.Online : DeviceStatus.Offline;
if (currentDeviceStatus == Status)
{
return;
}
if (currentDeviceStatus == DeviceStatus.Online)
{
SendBlockSize = AtUsbHid.GetInputReportLength();
}
Status = currentDeviceStatus;
DeviceChangeStatus?.Invoke(this);
}
private void recieveDataMonitor()
{
while (true)
{
Thread.Sleep(ReadBufferInterval);
if (Status != DeviceStatus.Online)
{
continue;
}
var buff = AtUsbHid.ReadBuffer();
if (buff != null && buff.Length != 0)
{
Task.Factory.StartNew(() => ReceiveBytes?.Invoke(buff));
}
}
// ReSharper disable once FunctionNeverReturns
}
public void Dispose()
{
AtUsbHid.FreeLibrary();
}